/**
 * Copyright (c) 2011 ~ 2013 Deepin, Inc.
 *               2011 ~ 2013 jouyouyun
 *
 * Author:      jouyouyun <jouyouwen717@gmail.com>
 * Maintainer:  jouyouyun <jouyouwen717@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 **/

package main

import (
	"dlib/logger"
	"fmt"
	"os/exec"
	"strings"
)

const (
	CMD_DF = "/bin/df"
	ARG_DF = "-h"
)

func getDiskCap(path string) {
	bytes, err := exec.Command(CMD_DF, ARG_DF).Output()
	if err != nil {
		logger.Println("Exec 'df -h' failed:", err)
		panic(err)
	}
	fmt.Println("path:", path)

	outStrs := strings.Split(string(bytes), "\n")
	for _, str := range outStrs {
		array := strings.Split(str, " ")
		rets := delSpaceElment(array)
		l := len(rets)
		if l <= 2 {
			break
		}

		if array[0] == path {
			fmt.Println("Total:", rets[1])
			fmt.Println("Used:", rets[2])
		}
	}
}

func delSpaceElment(strs []string) []string {
	rets := []string{}

	for _, v := range strs {
		if len(v) > 0 {
			rets = append(rets, v)
		}
	}

	return rets
}

func main() {
	getDiskCap("/dev/sda7")
}
